A novel experimental study of the dynamic and seismic response of a 2 m × 2 m in plan - 0.7 m in height groin vault model, involving 266 tests conducted on the shaking table of EQUALS laboratory, University of Bristol, UK, is reported. The experimental rig consists of blocks formed by a 3D-printed plastic skin to provide stiffness and strength, filled with mortar. Dry joints between the voussoirs are formed for ease of testing and vault reconstruction. No investigations of this kind and size have been attempted in the past. Two support boundary conditions involving four lateral confinement modes, leading to various vault configurations, were tested. White-noise, sinusoidal and earthquake motions were imposed in one horizontal direction, with progressively increasing amplitude and different frequencies, up to collapse. The model exhibited a strong non-linear behaviour, characterised by decreasing fundamental frequency and increasing damping with increasing table acceleration. Failure mechanisms and collapse accelerations were found to mainly depend on base restraint conditions.

报告了一项关于 2 m × 2 m 平面 - 0.7 m 高腹股沟拱顶模型的动力和地震响应的新实验研究，涉及在英国布里斯托尔大学 EQUALS 实验室的振动台上进行的 266 次测试。实验装置由由 3D 打印塑料表皮形成的块组成，以提供刚度和强度，并填充砂浆。形成 voussoir 之间的干接缝是为了便于测试和拱顶重建。过去没有尝试过这种类型和规模的调查。测试了涉及四种横向限制模式的两个支撑边界条件，导致各种拱顶配置。在一个水平方向上施加白噪声、正弦和地震运动，振幅和频率逐渐增加，直至坍塌。该模型表现出很强的非线性行为，其特征是随着工作台加速度的增加而降低基频和增加阻尼。发现失效机制和崩溃加速度主要取决于基础约束条件。